Combined testing instrument and cap



FIG. 1 is a perspective view of a combined testing instrument and cap showing my new design from the front, top and left side;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a perspective view thereof from the front, top and left side showing the cap separated from the testing instrument; and,

FIG. 6 is a perspective view thereof from the front, top and left side showing the cap in an alternative position. 

The ornamental design for a combined testing instrument and cap, as shown and described. 